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GeForce GTX 970 vs Radeon HD 7950

Intro

The GeForce GTX 970 features clock speeds of 1050 MHz on the GPU, and 1750 MHz on the 4096 MB of GDDR5 RAM. It features 1664 SPUs along with 104 Texture Address Units and 64 ROPs.

Compare those specifications to the Radeon HD 7950, which comes with core speeds of 800 MHz on the GPU, and 1250 MHz on the 1536 MB of GDDR5 memory. It features 1792 SPUs as well as 112 TAUs and 32 ROPs.

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Benchmarks

These are real-world performance benchmarks that were submitted by Hardware Compare users. The scores seen here are the average of all benchmarks submitted for each respective test and hardware.

3DMark Fire Strike Graphics Score

GeForce GTX 970 10867 points
Radeon HD 7950 7731 points
Difference: 3136 (41%)

Zcash Mining Hash Rate

GeForce GTX 970 262 Sol/s
Radeon HD 7950 235 Sol/s
Difference: 27 (11%)

Ethereum Mining Hash Rate

Radeon HD 7950 21 Mh/s
GeForce GTX 970 19 Mh/s
Difference: 2 (11%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 970 145 Watts
Radeon HD 7950 200 Watts
Difference: 55 Watts (38%)

Memory Bandwidth

As far as performance goes, the Radeon HD 7950 should in theory be a little bit better than the GeForce GTX 970 overall. (explain)

Radeon HD 7950 240000 MB/sec
GeForce GTX 970 224000 MB/sec
Difference: 16000 (7%)

Texel Rate

The GeForce GTX 970 should be a lot (approximately 22%) faster with regards to AF than the Radeon HD 7950. (explain)

GeForce GTX 970 109200 Mtexels/sec
Radeon HD 7950 89600 Mtexels/sec
Difference: 19600 (22%)

Pixel Rate

If running with high levels of AA is important to you, then the GeForce GTX 970 is the winner, by a large margin. (explain)

GeForce GTX 970 67200 Mpixels/sec
Radeon HD 7950 25600 Mpixels/sec
Difference: 41600 (163%)

Please note that the above 'benchmarks' are all just theoretical - the results were calculated based on the card's specifications, and real-world performance may (and probably will) vary at least a bit.

Price Comparison

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GeForce GTX 970

Amazon.com

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Radeon HD 7950

Amazon.com

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Please note that the price comparisons are based on search keywords - sometimes it might show cards with very similar names that are not exactly the same as the one chosen in the comparison. We do try to filter out the wrong results as best we can, though.

Specifications

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Model GeForce GTX 970 Radeon HD 7950
Manufacturer nVidia AMD
Year September 2014 January 2012
Code Name GM204-200 Tahiti Pro
Memory 4096 MB 1536 MB
Core Speed 1050 MHz 800 MHz
Memory Speed 7000 MHz 5000 MHz
Power (Max TDP) 145 watts 200 watts
Bandwidth 224000 MB/sec 240000 MB/sec
Texel Rate 109200 Mtexels/sec 89600 Mtexels/sec
Pixel Rate 67200 Mpixels/sec 25600 Mpixels/sec
Unified Shaders 1664 1792
Texture Mapping Units 104 112
Render Output Units 64 32
Bus Type GDDR5 GDDR5
Bus Width 256-bit 384-bit
Fab Process 28 nm 28 nm
Transistors 5200 million 4313 million
Bus PCIe 3.0 x16 PCIe 3.0 x16
DirectX Version DirectX 11.2 DirectX 11.1
OpenGL Version OpenGL 4.5 OpenGL 4.2

Memory Bandwidth: Bandwidth is the largest amount of data (in units of megabytes per second) that can be moved past the external memory interface in a second. The number is calculated by multiplying the bus width by its memory speed. In the case of DDR RAM, it should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the card's memory bandwidth, the better the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be processed per second. This figure is worked out by multiplying the total number of texture units of the card by the core clock speed of the chip. The higher the texel rate, the better the card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed per second.

Pixel Rate: Pixel rate is the most pixels the graphics card can possibly record to the local memory in a second - measured in millions of pixels per second. The figure is calculated by multiplying the number of colour ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate is also dependant on quite a few other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.

Display Prices

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GeForce GTX 970

Amazon.com

Check prices at:

Radeon HD 7950

Amazon.com

Check prices at:

Please note that the price comparisons are based on search keywords - sometimes it might show cards with very similar names that are not exactly the same as the one chosen in the comparison. We do try to filter out the wrong results as best we can, though.

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